Generator.



C. E. JOHNSTON.

GENERATOR. APPLlCATlON men JULY 29, ms.

1 259, EQQQ Patented Mar. 12, 1918.

2 SHEETS-SHEET 1.

w 1 A? E ATTORNEY C. E. JOHNSTON.

GENERATOR. APP LlCATlON FILED JULY 29. 9H5.

Patented Mar.

WITNEESE;

s ATE FFEQ GENERATOR.

Specification of Letters Patent.

Patented Mar. 12, 1918.

Application filed July 29, 1916. Serial No. 112,153.

To all whom it may concern:

Be it known that I, CYRUs E. JOHNSTON, a citizen of the United States of America, residing at vVilkie, in the Province of Saskatchewan and Dominion of Canada, have invented certain new and useful Improvements in Generators, of which the following is a specification.

This invention relates to generators, and more particularly to a steam generator specially adapted for use in connection with a turbine engine.

The turbine engine, because of its high efliciency, simplicity, and lack of vibration,

is peculiarly suited for use in connection with automobiles and similar vehicles. The

dome 2 having a safety valve 3 of any suit chief reason why this engine is not used for these purposes is due to the fact that its operation necessitates the provision of a comparatively large and heavy boiler and means for generating steam in this boiler. One of the main objects of my invention is to provide a generator of light construction and high efficiency by means of which steam may be supplied direct to the turbine engine. A further object is to provide a generator in which the products of combustion, as well as the steam generated, may be used for operating the turbine. A further 30.

object is to provide a generator specially constructed to burn either liquid or gaseous fluid. Further objects will appear from the detailed description.

In the drawings Figure 1 is a vertical central sectional view through the generator,

Fig. 2 is a front view, and

Fig. 3 is a section on line 33 of Fig. 2..

The numeral 1 designates a cylindrical boiler formed, at its upper end, with a steam able construction. A pipe 4 communicates with the steam dome and is connected to a turbine, not shown, so as to supply operating fluid to the'same. Near the lower end of boiler 1, and extending transversely thereof, I secure a cylindrical combustion chamber 5. At the inner end of this chamher, and communicating therewith, 1s se- 50.

cured a receiving chamber or header 6. A plurality of flue pipes 7 have the1r inner ends shrunk into the front Wall of the jheader Gand their outer ends secured in the inner wall of an approximately circular chamber 8 mounted near-the front of cylinr eal-1;. ,iThis-ch m er isa .-.errg ei a y a hand lever This section 18 is of -and adjustable thereon by means of a bind- .ing screw 24 threaded therethrough. The

' -A flanged cylindrical mixing chamber 9 is threaded into the outer end of the combustion chamber and has its inner end 10 provided with a plurality of relatively small perforations. This mixing chamber communicates, at its outer end, with an air pipe 11 in which is interposed an air supply valve 12. The stem 13 of this valve is extended inward and has its inner end squared so as to fit into the squared aperture provided at the apex of a bell crank lever 14. The lower arm 15 of this lever is pivotally connected to a pull rod 16 which may be connected to positioned on the steering or in any other suitable location, within easy reach of the person operating the automobile. The other arm 17 of the bell crank lever is pivoted to the lower end of the lower section 18 of a connecting rod. tubular construction and slidably receives a rod 19, the upper end of which is pivoted to a block 20. The parts 18.and 19 of the connecting rod may be adjusted by means of a binding screw 21 threaded through a collar 22 integral with wheel,

the upper end of the section 18, so as to vary the effective length of the connecting rod.

The block 20 is mounted on an arm 23 lower end of arm 23 is fixedly secured on the outer end of stem 25 of a needle valve 26 threaded into a short pipe 27, the inner end of which is threaded into a nipple 28 10c projecting from the wall of boiler 1. A. 7 fuel supply pipe 29 communicates at its upper end with the pipe 27, and at its lower end with a fuel supply tank 30. The fuel inthis tank is fed under pressure into the ipe27, the flow of the fuel being controlled y the needle valve 26. The air pipe '11 communicates with an air tank 31 so as to feed air into the mixing chamber 9 under pressure, the flow of this air being con. trolled by the valve 12. Due to the connect qnsbe veei the -Ye 11-. n 26, these 23, the amount offuel which is fed into the mixing chamber in proportion to the air At the same time, sure from the tanlrBl, by means of the pipe ,be'r where they supply pipe 38 circulates freely converted into steam.

may be varied to suit theparticular fuel used. When the block has been adjusted as described, the "proportions of air and fuel willremam constant for the different variationsjor aclplstments of the two valves by means of therod 16.

The inner end of the short pipe 27 with which the fuel supply pipe communicates, is

connected to a vaporizing coil 32 mountedm the'vaporizing coil chamber'8' at the front of the boiler l. The lower-end of this coil communicates with a pipe 33 which discharges downwardly into a neck 34: of the mixing chamber 9 through the aperture 35 in the top thereof. In using a liquid fuel, such as kerosene, gasolene, or the like, the fuel is thoroughly vaporized by the heat from the products of combustion as it passes through the coil 32. This vaporized fuel is discharged in a vertical stream of current across the neck 84 of the mixing chamber.

air is admitted under pres- 11, in a plane at right angles to the stream of vaporized fuel. The air acts to thoroughly dissociate and atomize' the fuel, and the air and fuel flow into thefmixing'chamare thoroughly and intimately mixed. This mixture is forced through the perforated inner'end, 10 of the .mi'x'ing chamber into the combustion cham- 5' where it plug 86 which is threadedjinto the bottom 11o f{b'oiler '1' andconnected to a battery by is ignited by means of a spark means'of the'wires 37, in the usual manner.

When the mixture is ignited in'the comb?- tion' chamber it gives rise 1 products of combustion flowing through the flue pipes to intense heat, the

7 and vaporizing coil chamber 8 asfprevio'usly described. The water "which is fed into the'boiler 1 'bymea'nsof the water combustion chamber 5, 'pi'pes,7," header, 6 and chamber'S. Thiswater absorbs a large amount of the heat which is generated in the combustion chamber and quickly becomes This steam and the products of combustion theturbine engine so as to operate thesame.

' By this construction,both the steam genferat'edby the combustion of the fuelmixture iAsfthe boilerl thisconnection it is tobe about the v I flow into the steam f dome 2 and from there aretaken direct to Foutj departing:

a aw re "thatthe'fuel andtheiair "bera'iswthecembustion chamber at a pressure slightly greater than the pressure of the steam. The mixture of fuel and air isinjected under pressure into the combustion chamber, the perforated inner end of the mixing chamber serving to effectually prevent back-firing into the same.

As will be noted from Figs. 1 and 3 of the drawings, the combustion chamber 5, flue pipes 7, and vaporizing'coil chamber 8, are all relatively spaced so .as to permit free circulation of the-water in the boiler. This water absorbs the heatgenerated by the'combustion of the fuel so as to effectually prevent any of the elements of the generator being 'injuredby' heating to an undesirable degree. Also, this absorptionof heat serves to reduce the temperature of the products of combustion flowing into the steam dome '2 sufiiciently to avoid injury to the turbine from those products which flow into the same with the steam.

The boiler l is incased in a heavy layer or NVhi'le I'have described my generator as "using a liquid fuel, itwillbe evident that it cana'lso'be' used in connection with a gaseous fluid. When a fuel of-this character is used, the vaporizing'coil' may be omitted. In

7 v noted that rny generator isfwell adapted for use in connection*with 'anf'oiiy-hydrog'e'n burner. 'The "oxygen' and hydrogen wouldjbe"supplied to the mixing chamber fromsuitable tanks,"'in the same manner as the liquid fuel'and air,

' inflic -proportion of one part of the former to two parts of'the'latter. This mixture, when ignited,wouldproduce a'v'ery intense 1, heat, the productsof combustion being water vapor or superheate'cl' steain, which would readily combine with the steam generated in theboiler 1 and passinto the'tur'bine. By this mefans all danger of injury to the turbine', due to carbon passing intoj'thefsame .with-the products of combustion, would be eliminated.

It 'willbe made in the construction and arrangement "of the different parts of m invention withfrom the field and scope of the samefandl }-intend to include all "changesj' as fallwithin" the scope 'of thej appended-claims,'inthis appli ation, in which a; referredform "only or'nj'iy ime-urinals discwsedg nns-generators, a *coiiibu'stioii' 'ehambei ga obvious that changes maybe such mixing chamber secured in the combustion chamber and having its inner end of foraminous construction, an air supply pipe communicating with the mixing chamber at the outer end thereof so as to clirect a current of air inwardly axially of the mixing chamber, a fuel supply pipe communicating with the mixing chamber in advance of the air supply pipe and adapted to direct a stream of fuel into the mixing chamber radially of the same, a vaporizing coil chamber, a vaporizing coil mounted in said chamber and interposed in said fuel supply pipe, and means for conducting the products of ccmbustion frcm the combustion chamber to the vaporizing coil chamber so as to vaporize the fuel in the coil.

2. In a generator of the character described, the combination of a boiler, a combustion chamber mounted therein, a mixing chamber mounted in the combustion chamher and having its inner end of foraminous construction, a vaporizing coil chamber mounted within the boiler, a vaporizing coil mounted in said chamber and communicating with the mixing chamber, means for supplying fuel to the said coil, means for supplying air to the mixing chamber, and means for conducting the products of combustion from the combustion chamber to the vaporizing coil chamber, said vaporizing coil chamber being open at its upper end and communicating directly with the interior of the boiler.

3. In generators, a boiler, a combustion chamber mounted within the boiler, a vaporizing coil chamber mounted within the boiler and open at its top communicating directly with the interior of the boiler, a fuel vaporizing coil mounted in said coil chamber and communicating with the combustion chamber and a plurality of spaced flue tubes communicating with the combustion chamber and the vaporizing coil chamber, said tubes, combustion chamber, and vaporizing coil chamber being all mounted in spaced. relation whereby free circulation of water in the boiler about and between all of said elements is permitted.

4;. In generators, a boiler, a combustion chamber mounted within the boiler, a vaporizing coil chamber mounted within the boiler and open at its top communicating directly with the interior of the boiler, a mixing chamber communicating with said combustion chamber, a vaporizing coil mounted in said vaporizing coil chamber and communicating with said mixing chamber, means for supplying fuel to said coil, a header carried by the combustion chamber at the inner end thereof, and a plurality of flue tubes communicating with said header and said vaporizing coil chamber.

In testimony whereof I afiix my signature in presence of two witnesses.

CYRUS E. JOHNSTON.

Witnesses:

ERNEST LAYcocK, En E. JOHNSTON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner 08 latents,

Washington, D. G. 

